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WAP321 - iPad problems

Joris Everaert
Level 1
Level 1

‎07-13-2015 03:12 AM

Dear,

We have two WAP321 with firmware 1.0.53 running in a cluster.  The AP's are configured as 5 ghz - n channel 40.  Channel bandwidth 20 (tested with 20/40 : no difference).

The connected PC's are running fine.  The situation with the iPad's has degraded to unworkable since ios 8.4.  

Connection is lost several times an hour, when the iPad dims the screen, wireless connection is dropped and does not restore automatically when using the screen again.  This means also that all notifications are more or less late. Less important for 'news' but a lot more important when one uses an app to control an access door.

I've shutted down the iPads manually (hard shutdown), disconnected and rebooted the access points etc. but nothing improves the situation.

In the log file, I see a lot of the following messages : 

 

Jul 13 2015 12:02:15infohostapd[1342]The wireless client with MAC address 00:eb:2d:17:2d:5a has been successfully authenticated. 
Jul 13 2015 12:02:15infohostapd[1342]wlan0: WPA STA 00:eb:2d:17:2d:5a pairwise key exchange completed (WPAv2) 
Jul 13 2015 12:02:15infohostapd[1342]wlan0: IEEE 802.11 STA 00:eb:2d:17:2d:5a associated with BSSID 64:9e:f3:87:2c:60 
Jul 13 2015 12:02:15infohostapd[1342]wlan0: IEEE 802.11 Assoc request from 00:eb:2d:17:2d:5a BSSID 64:9e:f3:87:2c:60 SSID ANStr9C24 
Jul 13 2015 12:02:03infohostapd[1342]wlan0: IEEE 802.11 STA 00:eb:2d:17:2d:5a deauthed from BSSID 64:9e:f3:87:2c:60 reason 4: Disassociated due to inactivity 
Jul 13 2015 12:01:35infohostapd[1342]The wireless client with MAC address 00:eb:2d:17:2d:5a has been successfully authenticated. 
Jul 13 2015 12:01:35infohostapd[1342]wlan0: WPA STA 00:eb:2d:17:2d:5a pairwise key exchange completed (WPAv2) 
Jul 13 2015 12:01:35infohostapd[1342]wlan0: IEEE 802.11 STA 00:eb:2d:17:2d:5a associated with BSSID 64:9e:f3:87:2c:60 
Jul 13 2015 12:01:35infohostapd[1342]wlan0: IEEE 802.11 Assoc request from 00:eb:2d:17:2d:5a BSSID 64:9e:f3:87:2c:60 SSID ANStr9C24 
Jul 13 2015 12:01:02infohostapd[1342]wlan0: IEEE 802.11 STA 00:eb:2d:17:2d:5a deauthed from BSSID 64:9e:f3:87:2c:60 reason 4: Disassociated due to inactivity 
Jul 13 2015 12:00:19infohostapd[1342]The wireless client with MAC address 00:eb:2d:17:2d:5a has been successfully authenticated. 
Jul 13 2015 12:00:19infohostapd[1342]wlan0: WPA STA 00:eb:2d:17:2d:5a pairwise key exchange completed (WPAv2) 
Jul 13 2015 12:00:18infohostapd[1342]wlan0: IEEE 802.11 STA 00:eb:2d:17:2d:5a associated with BSSID 64:9e:f3:87:2c:60 
Jul 13 2015 12:00:18infohostapd[1342]wlan0: IEEE 802.11 Assoc request from 00:eb:2d:17:2d:5a BSSID 64:9e:f3:87:2c:60 SSID ANStr9C24 
Jul 13 2015 12:00:03infohostapd[1342]wlan0: IEEE 802.11 STA 00:eb:2d:17:2d:5a deauthed from BSSID 64:9e:f3:87:2c:60 reason 4: Disassociated due to inactivity 
Jul 13 2015 11:59:03infohostapd[1342]The wireless client with MAC address 00:eb:2d:17:2d:5a has been successfully authenticated. 
Jul 13 2015 11:59:03infohostapd[1342]wlan0: WPA STA 00:eb:2d:17:2d:5a pairwise key exchange completed (WPAv2) 
Jul 13 2015 11:59:03infohostapd[1342]wlan0: IEEE 802.11 STA 00:eb:2d:17:2d:5a associated with BSSID 64:9e:f3:87:2c:60 
Jul 13 2015 11:59:03infohostapd[1342]wlan0: IEEE 802.11 Assoc request from 00:eb:2d:17:2d:5a BSSID 64:9e:f3:87:2c:60 SSID ANStr9C24

 

Attached, you'll find the config of one of the AP's. Has anyone an idea what I can do to improve the situation ?

 

Thanks,

 

George

Labels:
config_2.zip
0 Helpful
3 Replies 3

slstratt
Level 1
Level 1

‎07-14-2015 12:21 PM

Hello George,

Thank you for using the Small Business Support Community!

Did this issue only start occurring when the iPads were upgraded to iOS 8.4? If so, it sounds like there's a bug within iOS, especially since you say that the connection is fine until the screen dims.

I found another community post that was made a while ago that seems to be about the same issue you're experiencing. A solution that was found by the original poster is as follows: 

"I have seemed to fix most things by doing the following:

- Disable Bandwidth Utilization
- Set a static channel per radio (1,6,11)
- Disable Bonjour (leave that to the router and/or switch instead)

That's it. It all works perfectly fine now :)"

Please try the above steps and see if that solves the problem. If you have any other questions, feel free to post them here and I'll do my best to help you.

Best,

Taylor

0 Helpful

Joris Everaert
Level 1
Level 1
In response to slstratt

‎07-14-2015 02:51 PM

Taylor,

Thanks for your help.  I think it is iOS 8.4 related but I hope to hear some confirmation on this forum :)

I improved the situation by configuring some recommendations I found on the forum :

1. Moving to 5 ghz n-band , 20/40 MHz bandwidth 

2. Statically assigned channel 40 to one AP and 48 to the second AP.

3. Fixed multi cast rating at 54 mbit

4. Changed broadcast refresh rate to 0 (in networks)

5. Disabled bandwidth utilisation

6. Disabled unscheduled automatic power save delivery under Wireless - Qos

7. Disabled client QoS

8. Reset network configuration on all IOS devices, and reconfigured the clients on rebooted AP's

9. Disable all features with the word 'Green' in it on both the AP321 and the SG300

I have now added 'disable bonjour' to the list.

The experience is a bit better, but not good enough. Wireless connection is sometimes dropped and  will not reestablish itself automatically.  When I go through the Wifi section in the settings app, the Sid is shown and it reestablish a link in less than a second. 

Apple does not confirm a problem - off course. PC's are working fine and two android's also.

Kind regards,

George

 

 

 

0 Helpful

Eric Moyers
Level 7
Level 7
In response to Joris Everaert

‎07-15-2015 05:49 AM

JUst as a note, keep in mind that using the Channel Bandwidth 20/40, that as the bandwidth detects wireless chatter on the additional bandwidth it automatically drops down to 20. When this happens, you will get also see a drop in wireless performance since it is no longer functioning at double the bandwidth.

An additional item that you can check is, look at wireless security and TKIP. Also if possible use WPA2 exclusively, sometimes no possible on the last one but disabling TKIP, I have seen help with alot of the newer Apple devices.

Eric Moyers
.:|:.:|:. CISCO | Cisco Presales Technical Support | Wireless Subject Matter Expert

Please rate helpful Posts and Let others know when your Question has been answered.

 

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